PULLMAN, Wash. (AP) — The Whitman County coroner has concluded Washington State quarterback Tyler Hilinski died of a self-inflicted gunshot wound to the head.

Coroner Peter Martin says Thursday in a press release that the manner of death was suicide.

The full statement reads:

"After completing the scene investigation, to include a detailed forensic examination with toxicology, in the death of Tyler Scott Haun Hilinski, age 21, of Irvine, CA, a student at Washington State University, the Coroner has determined that the decedent died on January 16, 2018, at his residence in Pullman. The cause of death was a self-inflicted gunshot wound to the head. The manner of death was suicide. The Whitman County Coroner's office extends its condolences to family and friends."

Whitman County Coroner has issued statement saying it has completed its investigation into Tyler Hilinski’s death. pic.twitter.com/KMPIEsa8eo

The 21-year-old Hilinski was discovered in his apartment after he didn't show up for practice Tuesday. A rifle "was recovered next to Hilinski and a suicide note was found," according to the Pullman Police Department.

Hilinski, a backup the past two seasons, was the presumed starter for the Cougars heading into his junior season.

A vigil for Hilinski was announced by Washington State's student body president on Thursday night.

Cougar Family: The vigil will be 7pm tomorrow at the Cougar Statue. ASWSU will provide candles for the first 4,000 people, feel free to bring your own. We will have cards for you to sign and will send them to Tyler’s family. Please share and RT to spread the word. #RIP3